BudgetAnalyser.Engine.Services.DashboardService.DashboardService C# (CSharp) Method

        public DashboardService(
            [NotNull] IWidgetService widgetService,
            [NotNull] IBudgetBucketRepository bucketRepository,
            [NotNull] IBudgetRepository budgetRepository,
            [NotNull] ILogger logger,
            [NotNull] MonitorableDependencies monitorableDependencies)
        {
            if (widgetService == null)
            {
                throw new ArgumentNullException(nameof(widgetService));
            }

            if (bucketRepository == null)
            {
                throw new ArgumentNullException(nameof(bucketRepository));
            }

            if (budgetRepository == null)
            {
                throw new ArgumentNullException(nameof(budgetRepository));
            }

            if (logger == null)
            {
                throw new ArgumentNullException(nameof(logger));
            }
            if (monitorableDependencies == null) throw new ArgumentNullException(nameof(monitorableDependencies));

            this.widgetService = widgetService;
            this.bucketRepository = bucketRepository;
            this.budgetRepository = budgetRepository;
            this.logger = logger;
            this.monitoringServices = monitorableDependencies;
            this.monitoringServices.DependencyChanged += OnMonitoringServicesDependencyChanged;
        }